Now with iOS 4.2 and the new AppleTV, it is possible to "beam" photos from the iPhone and iPad photo album to a TV directly.
Please add the AirPlay functionality to the Smugmug iPad app so we do not have to download the photos first, switch to the photo viewer, and then view them via AirPlay.

This is something we’d love to do, however, Apple doesn’t currently have an API or an Apple TV App Store. Apple would have to agree to include “SmugMug” as one of the few available apps. We’re also planning on adding support for the upcoming Apple Photos app (since Aperture is no longer being updated) at some point in the future. If Apple does ever open an App Store for the Apple TV we’d love to add support!

SmugMug Guru's. I would take most of these comments/recommendations and take them up a notch. I feel like 3rd part Apps are fine - but rarely have the polish they could have if you put the time and energy into them yourself. Please create mobile AND tablet versions of a SmugMug App for photos and video. Once these are done simply add the few lines of code to make them ChromeCast compliant. Next, please make an official Roku App. An AppleTV App would be awesome too - however, if the native App for mobile and tablet are working well then we can always AirPlay. And while you're at it - you might check into Xbox360/XboxOne/PS4 Apps! Absolutely LOVE your platform - just keep moving forward!

This is probably an Apple limitation than a SmugMug one. Roku lets anyone create a channel so you see 3rd party SmugMug channel on there. Apple TV only lets Apple approved channels so I doubt you'll see anything until they open it up like they've done with the Apple Apps and Mac Apps stores.

Just add Airplay and slideshow functionality to the app for iPhone/iPad and that is enough. And totally under the control of SmugMug (aside from Apple's blessing to have the app in the AppStore). Getting a SmugMug app on the AppleTV list of apps may be a bridge to far but this would work immediately.